Hi, all I'm trying to use rosbridge and wviz. After installed and compiled brown_remotelab stack and rosjs, rosbridge.py node returns error. On my another destop PC, this problem does not occur. Does anyone know about this problem? --- console output saito@pr1012:~$ rosrun rosbridge rosbridge.py Problem Problem Problem Problem Problem Problem Problem Problem Problem Problem Traceback (most recent call last): File "/u/saito/ros/electric/brown_remotelab/rosbridge/bin/rosbridge.py", line 270, in serveForever(handleFrameFactory(handleMsgFactory, sub, keyurl, ros), handleOutput, loop, host, port) File "/pr/1/saito/ros/electric/brown_remotelab/rosbridge/bin/terribleWSS/ws.py", line 259, in serveForever socks = incoming + filter(lambda x:x not in incoming,outgoing) UnboundLocalError: local variable 'outgoing' referenced before assignment thanks, Manabu -- Manabu Saito